//
// This file is part of Adguard for iOS (https://github.com/AdguardTeam/AdguardForiOS).
// Copyright © Adguard Software Limited. All rights reserved.
//
// Adguard for iOS is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Adguard for iOS is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Adguard for iOS. If not, see <http://www.gnu.org/licenses/>.
//

import Foundation

public final class RequestSender: RequestSenderProtocol{

    let session = URLSession.shared

    public func send<Parser>(requestConfig: RequestConfig<Parser>, completionHandler: @escaping (Result<Parser.Model, Error>) -> Void) where Parser : ParserProtocol {

        guard let urlRequest = requestConfig.request.urlRequest else {
            completionHandler(Result.failure(RequestSenderErrors.stringToUrlError))
            return
        }

        let task = session.dataTask(with: urlRequest) { (data: Data?, response: URLResponse?, error: Error?) in
            if let error = error {
                completionHandler(Result.failure(error))
                return
            }
            guard let data = data,
                let parsedModel: Parser.Model = requestConfig.parser.parse(data: data, response: response)
                else {
                    completionHandler(Result.failure(RequestSenderErrors.receivedDataParsingError))
                    return
            }

            completionHandler(Result.success(parsedModel))
        }

        task.resume()
    }
}
